/* body {
    display: flex;
    flex-wrap: wrap;
} */
.coupon {
    display: inline-flex;
    color: white;
    position: relative;
    padding-left: .5rem;
    padding-right: .5rem;
    margin: 1rem;
    /** 弧度得用rem来计数，不能用%号，因为%是用来计数高度和宽度的 */
    border-top-right-radius: .3rem;
    border-bottom-right-radius: .3rem;
    overflow: hidden;
}
.coupon-yellow {
    background-color: #F39B00;
}
.coupon-yellow-gradient {
    background-image: linear-gradient(150deg, #F39B00 50%, #F39B00D8 50%);
}
.coupon-red-gradient {
    background-image: linear-gradient(150deg, #D24161 50%, #D24161D8 50%);
}
.coupon-green-gradient {
    background-image: linear-gradient(150deg, #7EAB1E 50%, #7EAB1ED8 50%);
}
.coupon-blue-gradient {
    background-image: linear-gradient(150deg, #50ADD3 50%, #50ADD3D8 50%);
}
/** 左边框波浪 **/
.coupon-wave-left::before, .coupon-wave-right::after{
    content: '';
    position: absolute;
    top: 0;
    height: 100%;
    width: 14px;
    background-image: radial-gradient(white 0, white 4px, transparent 4px);
    /** 若只设置为r（半径）的两倍(直径)，则半圆之间没有类似堤岸的间隔 */
    background-size: 14px 14px;
    background-position: 0 2px;
    background-repeat: repeat-y;
    z-index: 1;
}
.coupon-wave-left::before {
    left: -7px;
}
.coupon-wave-right::after {
    right: -7px;
}
.coupon-info {
    padding-left: 1rem;
    padding-right: 1rem;
    padding-top: 1rem;
    padding-bottom: 1.5rem;
    position: relative;
    min-width: 15rem;
}
.coupon-info-right-dashed {
    border-right: 2px dashed white;
}
.coupon-info-right-solid {
    border-right: 2px solid white;
}
/** 使用两个边框为圆角的白色div制造半圆缺角，有个缺点是这个缺角必须与背景色相同（clip-path不好使用） **/
.coupon-hole::before, .coupon-hole::after {
    content: '';
    width: 1rem;
    height: 1rem;
    background-color: white;
    border-radius: 50%;
    position: absolute;
    right: -.5rem;
}
.coupon-info::before {
    top: -.5rem;
}
.coupon-info::after {
    bottom: -.5rem;
}
.coupon-info>div {
    margin-bottom: .2rem;
}
.coupon-price {
    font-size: 250%;
    font-weight: bold;
}
.coupon-price>span {
    font-size: 40%;
    margin-left: .5rem;
    font-weight: normal;
}
.coupon-get {
    padding: 1rem;
    /** 这里使用flex是为了让文字居中 */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    min-width: 5rem;
    position: relative;
}
.coupon-get>.coupon-desc {
    font-size: 150%;
    margin-bottom: .5rem;
    font-weight: bold;
}
.coupon-get-already::after {
    content: '';
    width: 5rem;
    height: 5rem;
    background-size: 5rem 5rem;
    background-image: url('');
    position: absolute;
    top: -1rem;
    right: -1rem;
}